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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: Early math
Topic ID: 38
Message ID: 6
#6, RE: stumped
Posted by sfwc on Dec-24-03 at 07:12 PM
In response to message #4
Assume there is such a sum. Then since any number is congruent to the sum of it's digits modulo 9, we have
100 ~ 0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 ~ 0 mod 9
Which is a contradiction. So there is no such sum.

Thankyou

sfwc
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